Laurell got the better of the early exchanges but Sheilds began to find her feet as the round wore on.
The American picked up where she left off and continued to let fly with powerful shots that shook the Swede every time they connected.
Shields had chipped away at the deficit and was level by the final round. She surged forward, unwilling to let her good work go to waste.
Laurell could not cope with the intensity of Shields, who was by far the more aggressive of the pair.
The American's fightback was complete when the judges announced her as the winner.